Robot vacuum charging unit



FIG. 1 is a front elevation view of a robot vacuum charging unit showingour new design when the charging prongs are down;

FIG. 2 is a left side elevation view thereof showing our new design whenthe charging prongs are down, the right side being a mirror image;

FIG. 3 is a perspective view thereof showing our new design when thecharging prongs are down;

FIG. 4 is a top view thereof showing our new design when the chargingprongs are down;

FIG. 5 is a front elevation view thereof showing our new design when thecharging prongs are up;

FIG. 6 is a left side elevation view thereof showing our new design whenthe charging prongs are up, the right side being a mirror image;

FIG. 7 is a perspective view thereof showing our new design when thecharging prongs are up; and,

FIG. 8 is a top view thereof showing our new design when the chargingprongs are up.

The bottom of the robot vacuum charging unit is unornamented and,therefore, not shown.

CLAIM The ornamental design for a robot vacuum charging unit, as shown and described. 